Hey man. Thank you for the answer. I thought it was leaking because there supposed to be no oil on the forksno it’s not leaking you’ll notice fork oil leaking to your break caliper. I hope this answered your question because I had my 2013 cbr fork leak a lot and I have to learn to do all of it and and replace the fork seal
This.If there's oil on your fork tube it's at least seeping if not yet full-blown leaking. Where else would it come from?
The seals dry out over time. Usually they start to seep first before really leaking.
On a bike this old I'd just replace it. Replacing a fork seal isn't a big deal, especially on a non-upside down fork.
But you could buy a $10 Seal Mate and just clean the seal. I've fixed many this way.